Forecasting Dictionary
Searchable dictionary with terms extracted from the 'Principles of Forecasting: A Handbook for Researchers and Practitioners'.

Federal Reserve Terms
Glossary of terms relating to general economics, banking and terms specific to the United States Federal Reserve.

Bized.ac.uk Economics Glossary
This glossary has definitions of a wide variety of economics terms. Each glossary term will also give any related diagrams, other related glossary items.